Motorex Air Filter YAMAHA WR 250F/450F 2003-

A replacement air filter for the Yamaha WR250F and WR450F, supplied by Motorex under part number MOT152215. It drops into the standard airbox in place of the original element, so no modification is needed.

Suited to enduro and trail riders who service their own bike and want a spare on the shelf for regular airbox maintenance. Listed fitment across suppliers ranges from 2003 onwards, with the widest quoted coverage being 2003-2015 models; some suppliers list 2003-2012, so please check the part against your exact model and year before fitting.

• Replacement air filter element for Yamaha WR250F and WR450F
• Motorex part number MOT152215
• Fits the standard airbox with no modification required
• Quoted fitment from 2003 onwards (widest listed coverage 2003-2015)
• Handy spare for routine airbox servicing between rides

• 1 x Motorex air filter element

Confirm the part suits your exact model and year before fitting - WR250F and WR450F airbox designs changed across the model run.
Before removing the old filter, block or cover the intake so dirt cannot fall into the inlet tract while the airbox is open.
Wipe out the airbox and filter cage with a clean rag before installing the new element.
Apply a thin, even smear of filter grease to the sealing flange so the element seals fully against the airbox face - most airbox dirt ingress comes from a poor seal, not the filter itself.
Seat the filter squarely on the cage and check the retaining bolt or clip is done up before closing the airbox.
Check and service the filter after every ride in dusty, sandy or muddy conditions, and at least at each routine service otherwise.
Use a cleaner and oil appropriate to the element's material, and follow the cleaning product's own directions - do not use petrol or harsh solvents.
Allow a cleaned element to dry completely before re-oiling and refitting; fitting a damp filter can draw moisture into the intake.
Store spare filters in a sealed bag in a cool, dry place, away from direct sunlight and fuel or solvent fumes.
Replace the element rather than cleaning it once the foam or media is torn, hardened or no longer seals cleanly.